Small test method docstring fixes and fixes for tests of exceptional cases.
Small test method docstring fixes and fixes for tests of exceptional cases.

aalba6675/pyopenssl,samv/pyopenssl,sholsapp/pyopenssl,pyca/pyopenssl,reaperhulk/pyopenssl,mhils/pyopenssl,sorenh/pyopenssl,mschmo/pyopenssl,mitghi/pyopenssl,r0ro/pyopenssl,reaperhulk/pyopenssl,hynek/pyopenssl,r0ro/pyopenssl,hynek/pyopenssl,elitest/pyopenssl,daodaoliang/pyopenssl,adamwolf/pyopenssl,mhils/pyopenssl,aalba6675/pyopenssl,kjav/pyopenssl,mitghi/pyopenssl